United beat Tottenham in a topsy-turvy semi-final, while the Blues brushed past Southampton to qualify for the showpiece event at Wembley, and both will be desperate for silverware after underwhelming campaigns in the Premier League.
Who has won the FA Cup the most times?
Arsenal and Manchester United are currently tied on FA Cup wins, each having lifted the trophy 12 times. Tottenham and Chelsea have won the competition eight times, and lie second in the list, while Aston Villa and Liverpool have both lifted the trophy seven times.
A total of 43 teams have won the FA Cup.